Presser-roller-releasing device



G. C. HOSCH.

PRESSER ROLLER RELEASING DEVICE.

APPLICATION FILED SEPT. 23, 1920.

1,394,554. Patented Oct. 25, 1921.

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G. C. HOSCH. PRESSER ROLLER RELEASING DEVICE.

APPLICATION FILED SEPT. 23, 1920.

Patented Oct. 25, 1921.

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PRESSER ROLLER RELEASING DEVICE.

APPLICATION FILED SEPT-23, I920- Patented Oct. 25, 1921.

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GREENE CARLTON HOSCH, OF ST. LOUIS, MISSOURI.

rnussna-aotnnannnmsme DEVICE.

To all whom it may concern:

Be it known that I, GREENE CARLTON HOSGH, a citizenof the United States, residing in the city of St. Louis and State of Missouri, have invented new and useful Improvements in Presser Roller-Releasing Devices, of which the following isa specification. I

This invention relates to measuring machines. Such machines usually embody in their construction, a measuring roller and a cooperatingipresser roller which presses the materialbeing measured against the face of the measuring roller. the material is pulled between the rollers, the measuring roller advances the indicating mechanism; With the presserroller a spring 1s associated" that imparts its force to press the presser roller against the fabric lying between the rollers. Means is usually provided for detaining or latching-the 'presser roller in a raised position in which it lies away from the face ofthe measuring roller; when in this position, an opening. or gap is formed between the rollers topermit the introduc tion of the material to be measured. After the material or fabric to be measured has been introduced betweenthe rollers, the operator of :the machine then releases the presser roller, and its spring then forces it down upon the fabric or material to press the same against the measuring roller. When the presser roller is released in this way, the spring operates to drive it down against the measuring roller with considerable force, producing a-more or less violent impact of the rollers. Such a violent impactbetween the rollers should be avoided, and the general object of the present'invention is to provide a simple constmiction which will enable the presser-roller to be released as usual, but which will operate in such a way that when released, the-Presser roller will descend by gravity upon the 'measuring roller, that is to say, the action of the spring on the presser roller istemporarily inhibited. After the presser roller has descended upon the measuring roller the action of the spring then becomes normal and exerts its force to press the fabric or other material againstthe face of the measuring roller. A further object of the invention is to construct the parts in such a way as to adapt them to use in a machine in which the presser roller ieautomatice y ra sed by he action o t e Specification of Letters Patent.

Patented 0013.25, 1821.

Application filed'september 23, 1920. Serial No. 412,220. V V

knife which marks the edge of the material at the point where it is to i be cut off. Although features of the invention are applicable to measuring machines of many types, for the purpose of illustration, in the present application. I have described the invention as applied to a fabric measuring machine.

Further objects of the invention will appear hereinafter. I it The invention consists in the novel features, and in the general combination of parts to be particularly described hereinafter, all of which contribute to produce a simple and efficient presser roller releasing device. A preferred embodiment of my invention will be particularly described in the following specification, while the broad scope of my invention will be pointed out in the appended claims.

In the ,drawing,

Figure 1 ,is a side elevation of a fabric. measuring machine embodying my inventlon;

"Fig. 2 is a view similar to Fig. 1, but showing only the right hand portion of the machine, certain parts being broken away and shown in section;

Fig. 3 is a vertical section through the casing of the machine and passing through the releasing device as though taken about on the line 33 of Fig. 2; v V Fig. dis avertical cross section through the machine and further illustrating the releasing device; this view shows the partsin the relation which they have when the press 7 er roller is disposed against the measuring roller; n

Fig. 5 is a plan of the parts of the releasing device taken about on the line 5-5 of Fig; 4E; and l 5 Fig. '6 is a perspective illustrating the handractuated member that efiects the release of the presser roller.

Referring more particularly to the parts, 1 represents the casing of a fabric measuring machine, one end of which is provided with a gap 2 into which the fabric may; be introduced so; that the fabric willlie between the measuring roller 3 and a presser roller 4 ,disposed aboveit (see Fig. 4). In applying my invention to such a machine, I mount the .presser roller on a movable presser roller frame 5 which is preferablyin the form of or gudgeons 6 carried within the casing.

Associated with this frame I provide a spring, the function of which is to press the presser roller against the measuring roller.

I also provide detent means for holding the presser roller frame in a position to hold the presser roller away from the measuring roller (see Fig. 3). In addition to this I provide releasing means for actuating the detent means to permit the presser roller frame and its roller. to descend by gravity upon the measuring roller; that is to say, the releasing means operates in such a way as to temporarily inhibit the action of the spring, the normal functionof which is to press the presser roller downwardly. In order to accomplish this Iprovide detent means including an arm 7 mounted near the middle point of a horizontal shaft 8, the ends of which are supported in the inner frame 9 of the machine (see Fig. 2), and the presser roller frame 5 is provided with means to cooperate with this arm so'that the arm may hold the presser roller frame in a raised position (see Fig. 3); for this purpose the end of the detent arm 7 may be formedlinto a roller 10. Around theshaft 8 I provide a coil spring 11, one end of'which is fixed at 12 and the other'end of whichextends over the forks of the arm 7, which arm is preferably bifurcated as shown in Fig. .2 so as to receive the roller 10 between the forks; This roller 10 normally exerts pressure against a point on the rocker-frame 5 above its pivotal axis at 6 (see Fig. 4). The rocker frame 5is constructed in such a way as to form a socket 13 which may receive this roller. This socket is most conveniently formed by pro viding a yoke lhthe upper edge 15 of which lies adjacent to the upper edge of'the rocker frame 5 but is bent away from the. same as shown in Fig. 4:. The arms 16 of this yoke support the presscrroller t between them. With thisconstruction, it will be evident that if the rocker frame is'rotated in a clockwise direction (see Fig. 4); about its trunnion 6, the roller 10 will drop into the socket 13 and this will hold the presser roller elevated, as shown in Fig. 3. In order to enable the presser roller to be raised and held raised in this manner. the rocker frame 5 may include an outwardly projecting arm 17 andthis arm projects into the path of an edge 18 of the large knife lever 19 which is pivoted at 20 and swings in the space 21 just inside the vertical wall 22 of the casing (see Figs. 2 and 4). When the knife lever is depressed by means of a. thumb plate 23 carried near its end (-see Fig. 1),'the edge.

18 of the lever will actuate the arm and latch the presser roller in its raised position.

knife 25 to notch the edge; of" the fabric.

Fig. leshows the knife lever in a depressed position which it assumes in marking the fabric at the point where it is to be cut off.

Iprovide a hand-operated member or actuating pait for effecting the release of the rocker frame 5 from. the detent means including the arm 7. This member is preferably mounted in such a way that it. will engage and slightly raise the detentarm 7 thereby permitting-the frame 5 to descend by gravity with its presser roller 4: onto the measuring rollerr The actuating member then permits the detent arm to rengage the presser roller frame and impart the pressure of the spring to it. Inorder to accomplish thisI prefer to providethe casing 1 with a large rectangular notch 26 (see *Fig. 1), which incidentally"provides clearance for the thumb plate 23 when the knife lever is actuated. Just back of this notch 26 I provide an actuating plateiwhich is preferably in'the form of a -lever 27 supported on a hinge connection 27 on the inner'frame 9 of themachi'ne. -,This plate is preferably offset forwardly (see Fig. 4:)"andits lower portion isprovided with a cam face 28 which may be carried onaV-shaped plate 29 secured to the-inner face of the lever plate2 7. Inthe raised position. of the presser roller frame the cam face 28 lies against the outer and under face of the roller lO'on the end of the arm 7. Now, if this plate 27 is pressed inwardly by the thumb of the operator the. cam face- 28 will produce a slight upward rotation of the arm 7 on the shaft 8, and this movement 'willbe suflicient to release the-presser roller*frame,which will then descend-by gravityi When the operator removes his thumb from the lever 27 r and permits it to hangfreely, the spring 11 will then swing the arm;'? downwardly until the roller-1O comes. into contact with the outer side of the rocker frame :5. As soon as this Zoccurs the, spring pressure will be imparted to the presserroller.

Itis u'nder'stoodthat the. embodiment of the invention described herein is-only one of the many embodiments my-invention may take and I do notwish to be, limited in the practice of my invention nor in my claims, to 'the particular embodimentset forth;

What I'claim and desire to secure byLettersIPatentis:..@@-"

In amachine ofthe character described having a measuringroller', the combination of a presser roller, a movable presser roller above the measuringroller frame carrying the presserroller, a spring mounted to exert force on the presser roller frameand press its roller against the measuring roller, detent means cooperating with the presser roller frame to hold the same raised-with the presser. roller away from I the measuring roller, and an actuating member cooperating v uring roller.

2. In a machine of thecharacter described having a measuring roller, the combination of a presser roller, a movable presser roller along the measuring roller frame carrying the presser roller, a spring mounted to exert forceon the presser roller frame and press its roller against the measuring roller, detent means cooperating with the presser roller frame to hold the same raised with the presser roller away from the measuring roller, and a hand-operated member having a cam face for engaging the detent means and operating to inhibit temporarily the action'of-the spring on the presser roller frame to permit thesame and the presser roller to descend by gravity onto the measuring roller.

3. In a machine of the character described, having a measuring roller, the combination of a presser roller, a movable frame carrying the presser roller above the measuring roller, detent means including a spring cooperating with the presser roller frame to exert springpressure thereupon to hold the presser roller against the measuring roller, said presser roller frame and said detent means cooperating to hold the presser roller raised away from the measuring roller, and a hand-operated part cooperating with the detent means to release the presser roller frame therefrom to permit the presser roller to descend by gravity onto the measuring roller.

4. In a machine of the character described, having a measuring roller, the combination of a presser roller, a pivotally supported presser roller frame carrying the presser roller above the measuring roller, detent means including a spring, and a detent arm capable of cooperating with the presser roller frame to impart spring-pressure from the spring to the presser roller frame to press the presser roller against the measuring roller, said presser roller frame having a socket to cooperate with the detent arm to hold the presser roller frame raised with its roller away from the measuring roller, and a hand-operated part for releasing the presser roller frame from the detent arm to permit the presser roller to descend by gravity onto the measuring roller. 7

5. In a machineof the character described having a measuring roller, the combination of a presser roller above the measuring roller, a presser roller frame carrying the same and mounted to rock on an axis, detent means including a spring and a detent arm, capable of cooperating with the presser roller frame to impart spring-pressure from the spring to thepressure roller frame to press its roller against the measuring roller, said presser roller frame having a socket to cooperate with the ,detent arm to hold the presser roller frame raised with its roller away from the measuring roller,-and a handoperated lever having means for moving the arm to disengage the same from the presser roller frame and thereby permit the presser roller to descend by gravity onto the measuring roller.

6. In a machine of the character described, having a measuring roller, the combination of a presser roller, a presser roller frame carrying the presser roller above themeasuring roller and mounted to rock on an axis, detent means including a spring and a detent arm, capable of cooperating with the presser roller frame to impart spring-pressure from the spring to the presser roller frame to press its roller against the measuring roller, said presser roller frame having a socket to cooperate wtih the detent arm to hold the presser roller frame raised with its roller away from the measuring roller, and a hand-operated lever pivotally supported above the detent means and having a cam face for engaging the arm to raise the same when the lever is actuated. and operating to disengage the arm from the presser roller frame to permit the presser roller frame to descend by gravity onto the measuring roller.

7. In a machine of the character described having a measuring roller, the combination of a casing, a presser roller above the measuring roller, a presser roller frame carrying the same, mounted to rock on an axis within the casing, detent means including a spring capable of cooperating with the presser roller frame to impart spring-pressure from the spring to the presser roller frame to press its roller against the measuring roller, said presser roller frame having means to cooperate with the detent means to hold the presser roller frame raised with its roller away from the measuring roller, said casing having an opening in the side wall thereof opposite the detent means, and a lever pivotally mounted within the casing adjacent said opening for engaging said detent means to release the presser roller frame and permit the presser roller to descend by gravity onto the measuring roller.

8. In a machine of the character described, having a measuring roller, the combination of a casing, a presser roller above the measuring roller, a presser roller frame carrying the same, mounted to rock on an axis within said casing, detent means including a spring and an arm constrained by the spring and pivotally supported in the casing so as to project toward a side wall of the casing, said presser roller frame having means to cooperate with the arm to hold the presser roller frame raised with its roller away from the measuring roller, said side wall of the casing having an opening opposite the arm, and a lever pivotally mounted within the casing adjacent said opening for engaging the arm" to move the same, and thereby release the presser roller frame from the detent arm and permit the presser roller frame to descend by gravity onto the measuring roller, said lever constructed to permit the detent arm to impart the force of the spring to the resser roller frame after the same has descended by gravity.

9. In a fabric measuring machine having a measuring roller, the combination of a casing, a resser roller above the measuring roller, a presser roller frame carrying the same, and mounted to rock in the casing, a knife for marking the edge of the fabric, and operating to rock the presser roller frame when the knife is actuated and thereby move the same into a raised position with the resser roller away from the measuring roller, detent' means including a spring and a detent arm cooperating with the resserro]ler, said detent arm operating after the pr'esserrolier has descended-,-"to impart the force of the spring to the presser roller frame.

In testimony my hand.

4 e. CARLTON HosoH.

whereof, I have hereunto set 

